Flue-cutter



No. 609,536. Patented Aug. 23, I898."

P. DIXON.

FLUE CUTTER.

(Application filed Dec. 28, 1891'.) (No Model.)

WITNESSES J INVENTOR ATTORNEYS m: rwnms PEYER$ co. PHOlO-LYTHU, WASHINGTON. o c

Nrrn

PATRICK DIXON, OF BLOOMINGTON, ILLINOIS.

FLU E-CUTTER.

SPECIFICATION forming part of Letters Patent No. 609,536, dated August 23, 189

Application fil d December 28,1897. Serial No. 663,887. (No model.)

To all whom it may concern:

Be it known that I, PATRICK DIXON, residing at Bloomington, in the county of McLean and State of Illinois, have invented a new and Improved Flue-Cutter, of which the following is a specification.

This invention, which is in the nature ofa tube or flue cutter device, more particularly refers to improvements in a similar device disclosedin my Patent No. 564,056, granted July 14., 1896, and it primarily seeks to simplify the construction of such patented device, to render its use more effective, the arrangement of parts more durable, and its manufacture more economical.

This invention in the special features comprehends certain improved means for connecting the cutter to the lever and novel adjusting means for gaging the sweep or throw of the lever to regulate the penetrating thrust of such cutter.

With these objects in view my invention embodies a device for the purposes stated, having the novel combination and peculiar arrangement of parts which will be first described in detail and then be specifically pointed out in the appended claims, reference being had to the accompanying drawings, in which Figure 1 is a perspective view of my improvement. Fig. 2 is a longitudinal section of the same, the movement of the cutter and its operating-lever being indicated in dotted lines; and Fig. 3 is a transverse section taken on the line '3 3 of Fig. l.

Referring to the accompanying drawings, in which like numerals indicate like parts in all the figures, 1 designates the body portion, which is of a rectangular shape in cross-section, its side walls being arranged parallel to form. a slotway or lateral guides for the operating-lever 2, which is fulcrumed on the transverse pin 8, passed through the body 1 near its front end.

The body has a head portion 4: at the front, formed integral therewith or otherwise connected thereto, which has a flange 4 at its lower end, projected inwardly and formed with an uncut edge 4 which will project under the end of the flue to be cut and bear against the fiue sheet, as clearlyshown in Fig. 2, and clear such flue ends when the device is revolved. To facilitate the revolving of the said body'lwithin the flue, its edges are rounded, as at l.

The lever 2, one end of which forms a suitable handle 2, has its inner end projected beyond its pivotal axis, as indicated by 2, and at its extreme end it has (in its upper edge) a transversely-disposed horizontal cylindrical socket 5, terminating in a neck 5, having upwardly and outwardly inclined spaced to exactly divide the limited free longitudinal swing of the cutter relatively to the longitudinal axis of the lever, whereby when the lever is swung toa horizontal position, as indicated in Fig. 2, the cutter will be exactly centered and at a right angle to the lever to properly engage the fine.

To allow for wear, the cutter is made of sufficient excess length to admit of its being frequently sharpened.

To prevent the edge of the cutter protruding too far through the flue and to regulate the depth of its out, so as to efiect a uniform severed edge of the flue, an adjustable stop in the nature of a setscrew 8, engaging a for-- wardly-extending bracket 7 on the front end of the body 1, is provided, the operation of which will be readily understood from the drawings.

The manner in which my improved device operates is as follows: The body 1 is inserted in the'tube until its edge flange 45 engages the flue-sheet and bears against the projecting end of the flue, which serves to properly guide and center the body within the flue. The lever is then operated, which forces the cutter through the flue from the inside, the extent of penetration being governed by the adjustment of the stop 8. The lever is then raised to withdraw the cutter and the body turned within the tube to the next point of cutting, when the aforesaid operation is repeated.

From the foregoing description, taken in connection With the drawings, it is thought the advantages of my improvement Will be readily understood.

It will be noticed that a positive and strong bearing is provided for the cutter, such cutter held from any free lateral movement, and the strain transmitted transversely onto the lift end of the leverin a uniform manner the full width of the cutter. Furthermore, the adjusting means for limiting the downward movement of the lever provides for a uniform penetration and even transverse cut edge on the flue end, a result which can only be partially accomplished by using my other form of device in a most careful and slow manner. Thus my improvement provides for a quicker and more uniform operation and a more stable structure of the several parts constituting my flue-cutting device.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. A flue-cutter, comprising a hollow body open at the ends having parallel flat sides and a transverse slot, a lever journaled within and guided by such sides, said lever having a transverse cylindrical socket, and a cutterpiece having a cylindrical foot to seat in such socket, said cutter-piece having its upper end held to pass through the transverse slot in the hollow body as set forth.

2. In a flue-cutter, the combination of the hollow body open at the ends and having a transverse slot, said body having parallel fiat sides and rounded edges,'the front end hav ing a projecting flange, having an undercut guide portion, a lever having one end pivotally held Within and guided by the side Walls of the body, its inner end having a transverse cylindrical socket terminating in a neck having oppositely-inclined stop portions, and the cutter having a curved upper edge and an enlarged cylindrical transverse foot adapted to be slid endwise into the socket of the lever, all being arranged substantially as shown and described.

3. An improved flue-cutter, comprising a hollow body, a lever having its head portions extended within the body and horizontally pivoted therein, a transversely-held cutterpiece pivotally secured on the end of the said head portion, adapted to be projected through the transverse slot in the body, said body having a projecting member on its front face, and an adjustable screw-stop held therein for limiting the downward movement of the operating-levers as specified.

PATRICK DIXON.

Witnesses:

JOHN A. STERLING, WARE MILLER. 

